How to enable WebSphere Java2 Security

How to enable Java 2 security on WebSphere 6.0

Logon to WebSphere 6.1 administrative console
Select and expand "Security" on the left navigation pane
Click on "Secure administration, applications, and infrastructure"
In the "Java 2 security" section on the "Configuration" pane, check the checkbox for "Use Java 2 security to restrict application access to local resources"
Click "Apply"
Click "Save" to save your workspace changes to the master configuration
The server may need to be restarted for the changes to take effect

Logon to WebSphere 7.0 administrative console
Select and expand "Security" on the left navigation pane
Click on "Global Security"
In the "Java 2 security" section on the "Configuration" pane, check the checkbox for "Use Java 2 security to restrict application access to local resources"
Click "Apply"
Click "Save" to save your workspace changes to the master configuration
The server may need to be restarted for the changes to take effect

Logon to the WebSphere administrative console
Select and expand "Security" on the left navigation pane
Click on "Global Security"
In the "Java 2 security" section on the "Configuration" pane, check the checkbox for "Use Java 2 security to restrict application access to local resources"
Click "Apply"
Click "Save" to save your workspace changes to the master configuration
The server may need to be restarted for the changes to take effect